I know I drafted Matt Ryan in round 3 last season, so I'm keeping him. I also have had Brees on my team last year via trade but he was drafted in Round 2 so I can't keep him.
We didn't have these complicated keeper rules last season. The Commish loves to experiment and try crazy new rules every year and we're always confused until things get up and running.
Did you get a team assigned to you yet?